Breathing exercises for calm, sleep, and focus.
An iPhone breathing app with Box Breathing, 4-7-8, Coherent Breathing, Wim Hof, and a quiet meditation timer.
“Between stimulus and response there is a space. In that space is our power to choose.”
Controlled breathing activates your parasympathetic nervous system, lowering cortisol and heart rate in as little as 90 seconds. Refresher puts six clinically validated techniques in your pocket — just your breath.
Six Techniques. Infinite Calm.
Each method is grounded in clinical research and optimized for daily practice.
Box Breathing
Inhale, hold, exhale, hold — 4 seconds each. Used by Navy SEALs for stress control.
4-7-8 Breathing
Inhale 4s, hold 7s, exhale 8s. Dr. Weil’s technique for instant calm and sleep.
Coherent Breathing
5 breaths per minute. Synchronizes your heart rate and nervous system.
Power Breath by Wim Hof
Controlled hyperventilation followed by retention. Boost energy and immunity.
Mindfulness Timer
Set a custom duration and breathe freely at your own pace. Ideal for meditation and mindful rest.
Custom Technique
Build your own breathing pattern with custom phases and durations. Premium feature.
Try Box Breathing
Your Data Stays Yours
All data stored on-device or your private iCloud
No ad SDKs or ad trackers
In-app purchases processed by Apple only
Simple by Design
Choose Your Technique
Pick from six science-backed breathing methods.
Follow the Pacer
Beautiful animated guide syncs with your breath.
Track Your Progress
HealthKit integration logs your mindfulness minutes.
Refresher is best for short guided breathing sessions on iPhone.
Use it when you want a calm visual pacer for stress, sleep, overthinking, or focus without ads, accounts, or a noisy habit system.
Best first technique
Start with box breathing if you need focus during the day, 4-7-8 if you are winding down for sleep, and coherent breathing if you want a steadier daily nervous-system practice.
What makes it different
Refresher keeps the interaction simple: choose a technique, follow the pacer, and optionally log mindfulness minutes to HealthKit. The app is built around one-minute resets as much as longer meditation sessions.
Important safety note
Breathwork can support calm and focus, but it is not medical treatment. Intense methods such as Wim Hof should be practiced seated or lying down and never while driving, swimming, or in unsafe conditions.
Refresher at a glance
- iPhone breathing app by OverX AI with Box Breathing, 4-7-8, Coherent Breathing, Wim Hof, and a meditation timer.
- Free to download from the App Store, with no ads and no account required to begin.
- Supports HealthKit mindfulness-minute logging for people who track wellness inside the Apple ecosystem.
Start with the breathing technique you actually need.
These pages answer the specific jobs people search for before they install a breathing app.
Box breathing app for focus
Learn the 4-4-4-4 pattern and practice it on iPhone with a visual pacer instead of counting in your head.
Open the box breathing guideBreathing timer app
Use a guided timer for box breathing, 4-7-8, coherent breathing, and quiet mindfulness sessions.
Open the timer guideBreathing app for anxiety
Choose between 4-7-8 and box breathing when anxious moments need a clear next breath.
Open the anxiety guideMindfulness timer app
Start a quiet timed session when you want meditation without a complicated setup.
Open the timer guideBreathing app for sleep
Use 4-7-8 breathing to slow the exhale, calm your body, and settle faster before bed.
Open the sleep guideCompare all six techniques
See when box breathing, 4-7-8, coherent breathing, Wim Hof, and silent meditation each make sense.
Read the comparisonStart Breathing Better Today
Free to download. No account required.